Incinerator



May 2, 1933.

J. E. ALLEN ET AL. 9 9

INGINERATOR Filed April 26, 1930 Patented May 2, 1933 JOHN ALLEN ANDJOEE L. l /TCDUHALD, H:

INCINERATOB Application filed April 26,

This invention relates to incinerators.

It is the primary object of the invention to provide an incineratorparticularly adapted for domestic use, in which waste material or refusecan be burned efiiciently without any fire hazard.

Another object of the invention is to provide corner members of unitaryconstruction, which members may be interfitted and assembled above afoundation to form the incinerator inclosure; each corner member beingcast as a unit of two side slab sections, the free longitudinal edges ofwhich are adapted to join each other without additional securing means,and form a rigid, durable and fireproof incinerator body.

)ther objects and advantages are to provide an incinerator that will besuperior in point of simplicity, inexpensiveness of construction,positiveness of operation and facility and convenience in use andgeneral eiliciency.

In this specification and the annexed drawing, the invention isillustrated in the form considered to be the best, but it is to beunderstood that the invention is not limited to such form, because itmay be embodied in other forms; and it is also to be understood that inand by the claims following the description, it is desired to cover theinvention in whatsoever form it may be embodied.

The invention is clearly illustrated in the accompanying drawingwherein,

Fig. l is a front view partly in section, of the incinerator constructedin accordance with our invention.

Fig. 2 is a cross sectional view of the incinerator, the section beingtaken on the line 22 of Fig. 1.

Fig. 3 is a side view of the incinerator.

Fig. 4 is a detail view of a modified form of one of the corner slabs ofour incinerator; and

Fig. 5 is a detail view of the door support of our incinerator.

Fig. 6 is an enlarged fragmentary side elevation of the bracket formingthe door hinge.

In carrying out our invention We make 1830. Serial No. id-7,521.

use of a box structure 6 on a divided or unitary base or foundation 7and a stack structure 8 on the top of the box structure 6.

The box structure 6 is formed of four corner members 9, which arepreferably cast the box structure. The mating side or edge 12 of eachslab 11 is the longitudinal center division line of the respectivetrapezoidal box side, and it is formed so that an inter-- locking eilectand seal is formed at the meeting of said edges 12. For this purpose onemating edge 12 of each member 9 is formed with a longitudinal tongue 13,and the other edge 12 thereof has a longitudinal groove 14 therein. Thecorner members 9 are so assembled that the tongue 13 of the edge 12 ofone corner 9 engages the groove 14 in the adjacent edge 12 of anothercorner member 9.

Another arrangement is shown in Fig. 4, wherein the longitudinal edge ofone slab 11 has its outer half cut away to form an inner lap 16. @n theother slab ll of the same corner member 9 is formed an outer lap 17 toform a lap joint with the respective mating edge 12 of another cornermemher 9.

The slabs 11 of the same corner member 9 are at right angles to eachother, so that the four members 9 are readily assembled into anincinerator box unit of substantially rectangular cross section, withintegral corners, and sectional but overlappingly joined trapezoidal,upwardly converging sides.

The corner members 9 are assembled on the base 7, which latter hasupwardly extending projections or flanges 18 around its periphery,inclosing 'a rectangular recess into which the base end of the cornermembers 9 fit. These flanges 18 prevent the outward spreading movementof the corner members 9. The base 7 hollow andhas a grate 19 securedthereto in the usual manner, on which the charge of refuse or waste isburned.

The charge of refuse or waste is introduced into the incinerator chamberwithin the box 6, thru a char e opening 21, the latter being formed byaligning cut away portions of the adjacent slabs 11 on the front of theincinerator, as shown in Fig. 1. The said cut away portions areintermediate the ends of the respective mating edges 12 and complementeach other.

The charge opening 21 is normally covered by a door 22, the lower edgeof which has laterally extending trunnions 23 to slidably and rotatablylit a curved groove 2 1 in a bracket 26, the latter being mountedadjacent the opening 21. The opening 21 may be framed to reduce the wearon the edges thereof. The door is assembled in place by sliding thetrunnions 23 thereof in the groove 2% until it is in proper operatingposition, then the door can be swung around its pivoted lower edge tocover or uncover the charge opening 21. In order to limit the openingposition of the door 22, the brackets 26 have stops 2'? thereon,arranged at a desired angle to support the door 22 in open position andpermit unobstructed introduction of refuse or waste into theincinerator.

The stack structure 8 includes a tubular stack 28 having an enlargedrectangular lower end 29 thereof recessed to fit over the top of the boxstructure 6 and to overlap the same, thereby to hold the upper ends ofthe corner members 9 against outward dis placement. The upper end of thestack 28 is slotted as at 31 and the open top itself is covered by arecessed cap 32 which ts over said stack end, limiting the discharge of:the smoke to the said slots 31. There are four such slots 31 and each ofthe slots 31 is covered by a suitable screen 33, as shown.

It will be recognized that a particularly facile and eflicientincinerator is provided for domestic use. The incinerator is made ofcast concrete slabs or the like, it is assembled and held together as asturdy unit, without the use of bolts or the like. The integral cornersof our incinerator provides perfect seal without the use of packing orgaskets. The straight mating edges of the slabs are joined with firmnessand security not attainable at mitered or beveled corner joints. Theentire incinerator is easily shipped, and it can be readily assembled ordisassembled by a layman, or by the unskilled labor available.

Having thus described this invention, what we claim and desire to secureby Letters Patent is:

1. In an incinerator box structure four corner pieces, each piece beingformed by a pair of slabs at right angles to each other, each slab beingin the shape of a half of a trapezoid, the free edge of each slab beingthe longitudinal center division line of the trapezoid, and the corneredges of the slabs being the inclined sides of the respectivetrapezoids, adjacent free edges of two of the slabs being cut away inregistry with each other to form an opening in the side of the box, andmeans to hold the corner pieces in engagement with each other.

2. In an incinerator box structure, four corner pieces, each piece beingformed by a pair of slabs at right angles to each other, each slab beingin the shape of a hall of a trapezoid, the free edge of each slab beingthe longitudinal center division line of the trapezoid, and the corneredges of the slabs being the inclined sides of the respectivetrapezoids, adjacent free edges of two or the slabs being cut away inregistry with each other to form an opening in the side of the box;means to hold the corner pieces in engagement with each other; and meanson said tree divisional edges of the slabs to form overlapping jointsbetween the free edges of adjacent slabs.

In testimony whereof, we have hereunto set our hands at San Francisco,Calif, this 15th day of April 1930.

JOHN E. ALLEN. JOHN L. MCDONALD.

